I got to try the spot welder yesterday. It works really good, almost too good. A 4 second weld was about right. Anything longer than that was burning though. I think I am going to grind the tips down some so they are not so pointed. That might work better. I'll keep you posted.

For any one thinking of getting one of these. I say go for it. To me it was worth it for the roof installation alone.

Wow, that really looks good. Always wary of Harbor Freight quality but the 220 unit did some nice work.